Massage vibrator and circuit therefor



June 24', 1924:! 1,498,679

E. E. CLEMENT MASSAGE VIBRAT'OR AND CIRCUIT THEREFOR Filed Sept. 26 1919a an m coooooeo m' INVENTOR Patented June 24, 1924.

UNlTED S TATES EDWARD E. CLEMENT, OE OCEAN CITY, HIE-N JERSEY.

MASSAGE VIBRATOR AND CIRCUIT THEREFOR.

Application filed September 26, 1919. Serial No. 3203, 189.

To all whom it may concern Be it known that I, EDWARD E. CLEMENT, acitizen of the United States, residing at Ocean City, in the county ofCape May and State of New Jersey, have invented certain new and usefulImprovements in Massage ibrators and Circuits Therefor, of which thefollowing is a specification.

My invention relates to vibrators. and especially those employed formechanical massage. It has for its object the provision of means toproduce fine sustained longitudinal vibration of the. finger tips of anoperator. which, if produced by the voluntary muscular action of theoperator requires many years of practice, and has certain deleteriouseffects well known to those skilled in the art.

To attain my object I employ an electrically actuated device, soproportioned and adjusted that its natural period of vibration gives thecorrect frequency and amplitude of vibrations. and cause these to becommunicated to the bony structure of the hand of the operator by meanswhich however I do not claim as my own. the same being the jointinvention of myself and Loraine M. Clement. I shall claim herein thestructure and method of operating the vibrator, and certain circuitarrangements Very briefly stated my vibrator depends on the principle ofhaving the armature fixed, and the entire magnet structure vibrate.

My invention is illustrated in the accompanying drawings. in which- Fig.1 is a top plan view of the vibrato-r.

Fig. 2 is a bottom plan view of the same.

Fig. 3 is a side view of the same.

at. is a diagram of the circuit connections on the vibrator.

Referring first to Figs. 1 to 4 inclusive, the vibrator comprises a baseplate of iron; marked (1", having two flanges a and a. On one side anintegral ear a is turned up, and to this ear is secured a bent spring mpreferably of steel. the other end of which is secured to the magnetstructure M and carries the same. This structure comprises the two coresm m, carrying windings m and m and connected one end by the iron bar weand at other by the brass bar m Mounted on the bar m is a contact springm, which when the magnet is deenergized touches the contact m screwedthrough the flange a with interposed insulation. To prevent sticking orfreezing of the magnet poles to the flange a which constitutes theirarmature, a copper strip a is centrally riveted to the inside of theflange with its ends projecting both ways between the ends of the magnetpoles and the flange am.

The circuit of the vibrator is through the contact m spring at, spring mframe or base to the soldered terminal m wire m, winding m, winding m,both in proper direction to reinforce each other in magnetic effect,wire m. As the current energizes the magnet the whole structure is drawntoward the flange at until the spring we leaves the contact m when theflow of current is interrupted and the further swing of the magnetstructure is only that due to its acquired momentum, which may beregulated; by regulating the amount of current passing through thewindings during the period of energization. Atthe end of its swing themagnet structure is retracted by the spring m the energizing circuit isthereby reestablished, and the vibration repeated as long as the flow ofcurrent in the circuit external to the vibrator is assured.

For strong vibratory massage the current is made strong enough to causethe ends of the magnet poles m and m to actually impinge against theflange a of the base. For weaker vibrational massage the current is cutdown so that the swing of the magnet structure checks itself withoutactually touching the flange- In either case the vibration sets up wavesof metallic vibration in the base and flange a, which waves cannotescape except through the air and through the object to which the baseis attached. The proportion of the waves which escape through the air isnegligible because the base is attached throughout its under surface toa harness which in turn is attached to the back of the hand of theoperator.

mg thus described my invention what I claim is:

A vibrator com rising a base plate of iron With parallel enc. flangesand 21 side ear an actuating electromsgnet mounted in its entirety on aspring secured to the ear with its pole pieces in proximity to oneflange, a fixed contact secured on the other Hav n Han s, and acooperating contact secu ed on the magnet structure, one of saidcontacts being insulated, together with circuit con nections for saidelectromagnet controlled h v said contacts.

In testimony whereof I aflix my signature.

EDNARD E. CLEMENT.

